woody123

Ah, got it now Rory. Thanks. The last picture, especially. I have several standard, permanently broken, photography lenses here, torn apart to examine. My imagination had an auto-iris lens the same as a standard manual lens, but with a motor mechanism attached externally to the lens barrel, driving the iris(aperture.) ...but the manual iris adjustment ring is entirely 'replaced' with the auto motor mechanism.

Appreciate the info Rory, Local security company going out of business, they're dumping a couple used wide-angle computar auto-iris lenses in fine shape. I'd like to use them on a DSLR in manual mode with a C-mount adapter. Manual Computar/Pentax-Cosmicars are typically used on these DSLRs, but wasn't sure if the guts of an Auto-Iris was essentially the same and could be adjusted by hand when disassembled. I don't know enough about the internal working of the auto mechanism. Is it just a motor assembly that sits outside of the lens barrel? Attached to the lens by shallow screws? Glued? Regards, Woody

thx nimrod, can I take your answer to mean that, yes, there's a functional manual-iris lens inside the auto-iris shroud?

Hello, I'm not familiar with auto-iris lens internals. If one were to disassemble an Auto-Iris Lens, is there a fully functional Manual-Iris Lens inside? I'd like to remove the electronics and use the Auto-Iris lens Manually on a Digital Camera. Any pitfalls or problems to watch for? Is this possible or a pipe dream? Thanks, Woody